EP3117120A1 - Hydrobuchsenanordnung - Google Patents
HydrobuchsenanordnungInfo
- Publication number
- EP3117120A1 EP3117120A1 EP15701774.0A EP15701774A EP3117120A1 EP 3117120 A1 EP3117120 A1 EP 3117120A1 EP 15701774 A EP15701774 A EP 15701774A EP 3117120 A1 EP3117120 A1 EP 3117120A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydraulic
- housing
- chambers
- flow
- inner sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
- F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
- F16F13/14—Units of the bushing type, i.e. loaded predominantly radially
- F16F13/1463—Units of the bushing type, i.e. loaded predominantly radially characterised by features of passages between working chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/26—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions
- F16F13/28—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper characterised by adjusting or regulating devices responsive to exterior conditions specially adapted for units of the bushing type
Definitions
- the invention relates to a hydraulic bushing arrangement comprising
- sleeve-shaped housing which surrounds an inner sleeve with a radial distance, wherein housing and inner sleeve are operatively connected to each other via a spring body, wherein the spring body is formed so that form two chambers between the housing and inner sleeve, which can be filled with a hydraulic fluid and the chambers with at least one device are hydraulically connected.
- Hydro bushes are known for example from DE 10 2005 003 052 A1.
- the previously known hydraulic bush is as a hydraulic damping
- Formed rubber sleeve comprising an inner support body which is enclosed by an outer support body with a radial distance, wherein in the gap formed by the gap, a spring body made of elastomeric material is arranged, which is radially inwardly connected to the inner support body and radially on the outside by means of a support ring on outer
- the previously known hydraulic bushing comprises a damping chamber filled with damping fluid, the liquid-conducting by means of a damping channel with a also filled with damping fluid first compensation chamber is connected. Both chambers are located within the bounded by the outer support body space. Likewise, the flow-conducting connection between the two chambers is arranged in the interior of the hydraulic jack.
- the flow-conducting connection between the two chambers can be designed such that, at certain frequencies, in particular in the resonance range, the greatest possible damping results.
- the prior art hydraulic jack is a purely passive component, so that no change in the working range is possible and the range of optimal damping is set to a specific frequency range.
- an actively damping hydraulic engine mount is known. This has a support and a support bearing, which are operatively connected to each other via a spring body and one with a
- the working space is operatively connected to an external hydraulic pressure source, through which the
- Fluid pressure in the working chamber can be regulated depending on the load.
- the active engine mount can be designed as a hydraulic bush, which has two chambers in the housing interior, which can be acted upon via separate feeds with a liquid. Also in this embodiment, only via an externally arranged pump is a
- the invention has for its object to provide a hydraulic bushing arrangement, which can be operated both active and passive and which has vibration-damping and / or vibration-isolating effect over a wide frequency range.
- the device is arranged outside the housing.
- the fact that the device is arranged outside the housing it is possible to provide active control means which influence the manner in which the hydraulic fluid flows in and out of the chambers. In this case, depending on the characteristics and circuit of the device between the two chambers, a flow-conducting
- Connection exist, which can allow each change in flow resistance in the device and earlier or later switching within the device, a change from a hard to a soft characteristic of the hydraulic jack.
- the bearing is operated in a passive, in a semi-active or in an active mode.
- the chambers and their flow-conducting connection via the device are preferably adjusted so that there is an active operating mode in the case of low-frequency, large-amplitude relative movements.
- a passive operating mode is preferably present.
- the actuators provided in the device are continuously regulated in such a way that optimum damping of the
- the semi-active mode of operation is preferably between selected for these two operating states.
- at least one volume flow between the chambers is modified in terms of amount by means of an auxiliary energy.
- the housing may have openings, wherein each chamber is associated with at least one opening.
- each chamber is associated with a flow line, wherein the flow lines in the device are hydraulically switched so that a flow around the outside of the device
- Hydraulic fluid between the chambers is possible.
- a plurality of flow lines for example, two flow lines are provided per chamber.
- the flow-conducting connection can be flowed through bidirectionally, so that hydraulic fluid can also be discharged through the flow-conducting connection.
- the device may include active control means.
- Control means influence the flow-conducting devices by means of externally supplied energy.
- the active control means influence the volume flow of the hydraulic fluid flowing around between the chambers. It basically applies that when opening the flow-conducting device, a large volume flow can adjust, resulting in a soft spring characteristic with large
- the device is provided with a valve arrangement.
- the valves of the valve arrangement can be designed as proportional valves.
- Valve arrangement seat valves. These have low actuation paths, short switching times and they are insensitive to dirt. However, a considerable space is required to achieve a high flow.
- the valve arrangement preferably comprises piston slide valves.
- the actuating forces are significantly lower because spool valves are not switched against forces caused by the working pressure in the flow-conducting devices.
- a proportional valve is an auxiliary power controllable valve, which not only allows discrete switching positions, but allows a steady transition of the valve opening from closed to open and vice versa. This makes it possible to regulate the volume flow of the flow-conducting device over a large area.
- the hydraulic bushing arrangement may comprise a plurality of proportional valves, wherein each chamber is assigned at least one proportional valve.
- Flow rate and thus also the pressure of the hydraulic fluid in the chambers, which finally determines the characteristics of the hydraulic jack is determined by the switching time of the directional control valve.
- the hydraulic fluid does not only flow around from one chamber to the other chamber. It is also conceivable that the hydraulic fluid in the flow-conducting device oscillates back and forth, without circulating from one chamber to the other chamber.
- Proportional valves or both proportional valves partially closed, results in a reduced volume flow, so that the flow around the
- the housing and the inner sleeve may be associated with a sensor device.
- the sensor device may comprise various sensors for detecting various states.
- a first advantageous sensor device detects the radial distance of the housing and the inner sleeve. Because the
- the sensor device may comprise a Hall probe.
- Hall probes the so-called Hall effect is used to measure the magnetic field.
- the electrons are deflected by the Lorentz force perpendicular to an externally applied magnetic field.
- a conductor is formed on one side
- Hall voltage is dependent on the charge carrier mobility in the conductor.
- a Hall probe is attached to the inner sleeve and opposite a permanent magnet on the inner wall of the housing or vice versa. Since the magnetic field of the permanent magnet is almost constant, but changes the magnetic field acting on the Hall probe with a change in the distance between the housing and inner sleeve, the Hall probe detects any change in distance between the housing and inner sleeve.
- the Hall probe is very sensitive, so that even small changes in distance are detected.
- the resolution is preferably less than 0.1 mm.
- two distance sensors are in the
- Hydro bushing arranged. These are preferably arranged opposite one another.
- the additional sensor arrangement enables an error correction, which can result, for example, from temperature changes.
- Acceleration and deflection speed can be determined. Both measured variables can then be used for the active control of the hydraulic jack
- Algorithm can also change the current stiffness of the temperature
- Feather body can be determined.
- a pressure sensor may be provided which detects the pressure inside a chamber.
- the sensor arrangement enables the implementation of a
- Control algorithm which allows an optional control of the hydraulic jack in real time.
- the control algorithm allows in
- the inner sleeve can be displaced, which allows a modification of the static and dynamic force ratios of the bearing.
- the hydraulic bush in a axle guide bearing of a rail vehicle, it is possible, for example, to adjust the axle guide bearing by means of the hydraulic pressure in the chambers so that the
- Axle link bearing is force-free to the outside. This means that the hydraulic bushing is adjusted in such a way that the forces acting on the wishbone bearing cancel each other out.
- control algorithm allows a conscious driving of misplaced. This is particularly advantageous if a detected unilateral wear on a component of the axle or the Achslenkerlagers of the rail vehicle was determined.
- the device may form a throttle.
- the throttling effect is created by reducing the volume flow of the hydraulic fluid flowing around between the two chambers. As a result, the hydraulic fluid is pressed through the flow-conducting device with small cross-section when excited.
- the device may form a absorber.
- the valve arrangement is switched such that, for example, in interaction with a pressure accumulator or in interaction with the swelling springs of the chambers, the hydraulic fluid in the flow-conducting device can swing back and forth. In this case, the frequency of the oscillating in the flow-conducting device hydraulic fluid to the on the hydraulic bushing arrangement acting phase-shifted. If the phase shift is out of phase with the induced vibrations, these vibrations are isolated.
- each chamber has a plurality of flow-conducting devices, it is conceivable that both chambers are connected to one another via a first flow-conducting device and pumping of the hydraulic fluid from one chamber into the other chamber is possible via this flow-conducting device.
- the valve arrangement associated with this flow path allows adjustment of the flow rate by regulating the volume flow
- the flow-conducting device takes over the Tilgerfunktion by the hydraulic fluid oscillates back and forth in these flow-conducting facilities.
- the device comprises a memory.
- the function of the memory is similar to that of an expansion vessel, so that enters the memory
- Hydraulic fluid can be taken without pressure. But it is also conceivable that the memory is designed as a pressure accumulator and so can act as an energy storage. In interaction with a damper, the oscillating back and forth in the flow-conducting device
- Hydraulic fluid are at least partially absorbed by the memory.
- the reservoir may be operatively connected to a pumping device through which hydraulic fluid can be conveyed from the chambers into the reservoir and back. In this case, it is also conceivable to completely drain the hydraulic fluid from the chambers, in order to obtain a particularly soft one
- the hydraulic bushing arrangement according to the invention is particularly advantageous when used as an active hydraulic axle link bearing.
- the hydraulic bushing arrangement is preferably part of a bogie of a
- the task of the wishbone bearing is the leadership of the wheelset one
- Hydro bushing arrangement has a high rigidity, which is adjustable and in particular not frequency-dependent.
- the setting angle of the axles is determined predominantly by the longitudinal rigidity of the axle bearing.
- radially adjustable wheelsets are a basic requirement for a low-wear and low-noise cornering.
- a smooth running especially at high speeds requires a very high rigidity of the axle bearing.
- Fig. 1 is a hydraulic bushing arrangement in section
- FIG. 2 shows a hydraulic bushing arrangement with a first device
- FIG. 3 shows a hydraulic bushing arrangement with a sensor device
- FIG. 1 shows a hydraulic bushing arrangement 1, which is a component of a wishbone bearing.
- the wishbone bearing is used in a bogie of a rail vehicle.
- the hydraulic bushing arrangement comprising a sleeve-shaped housing 2, of metallic material, which an inner sleeve 3, also made
- the housing 2 and the inner sleeve 3 are operatively connected to each other via a spring body 6.
- the spring body 6 is made of plastic, for example a rubber-based material.
- the spring body 6 is formed so that between the housing 2 and inner sleeve 3 two chambers 4, 5 form, which can be filled with a hydraulic fluid.
- the spring body 6 forms two webs, which are each connected to the housing 2 and the inner sleeve 3.
- the chambers 4, 5 hydraulically connected to a device 7.
- the device 7 can be flowed through bidirectionally. By means of the device 7, for example, the hydraulic fluid can be conveyed from one chamber 4 into the other chamber 5.
- the chambers 4, 5 can be emptied or the hydraulic fluid can be pressed with pressure into the chamber 4, 5.
- the chamber pressure and thus the rigidity of the hydraulic bush can be modified; furthermore, the position of the inner sleeve 3 relative to the housing 2 can be modified.
- the device 7 is arranged outside the housing 2. To connect the device 7, the housing has openings 8, wherein each chamber 4, 5 is associated with at least one opening 8.
- FIG. 2 shows the hydraulic bush arrangement 1 according to FIG. 1 with a first concrete embodiment of a device 7.
- the device 7 initially comprises two lines, one of which opens into the first chamber 4 and the other into the second chamber 5. Both lines and thus both chambers 4, 5 are connected via a valve assembly 10 flow-conducting together.
- the valve arrangement 10 comprises a first directional valve 13, which is designed as a 2/2-way valve. This means that the directional control valve 13 has two flow paths and allows two switching positions. In the first switching position both chambers 4, 5 are connected to one another in flow-conducting manner, in the second switching position the flow is blocked. Parallel to the first directional control valve 13 is a channel 19 with a very small
- a second directional control valve 14 is provided parallel to the first directional control valve 13, a second directional control valve 14 is provided.
- the second directional control valve 14 is designed as a 4/3-way valve.
- the second directional control valve 14, a pumping device 1 1 and a pressure accumulator 12 are assigned.
- the first chamber 4 is filled by means of the pumping device 1 1 and the second chamber 5 is emptied, in a second switching position by means of the pumping device 1 1, the second chamber 5 is filled and the first chamber 4 emptied, in a third switching position are the
- the degree of filling and the pressure in the chambers 4, 5 is determined by selecting the switching time of the second directional valve 14.
- FIG. 3 shows a hydraulic bushing arrangement 1 according to FIG. 1 or FIG. 2, wherein in this embodiment a sensor device 20, 21 is provided, which is arranged inside the hydraulic bushing.
- the housing 2 and the inner sleeve 3 are each assigned a sensor element which is set up to determine the distance between the housing 2 and the inner sleeve 3 - the gap dimension.
- the sensor device comprises a permanent magnet 21, which is fixed on the chamber 4 associated surface of the inner sleeve 3 and facing in the direction of the housing 2.
- the sensor device comprises a Hall probe 20, which is mounted on the chamber 4 associated surface of the housing 2 and facing in the direction of the permanent magnet 21.
- the magnetic field acting on the Hall probe 20 via the permanent magnet 21 changes and the distance change resulting therefrom in the Hall probe 20 can be determined.
- a second sensor device is provided. Permanent magnet and Hall probe are compared to the
- the sensor device comprises a temperature sensor 22 and a pressure sensor 23, which are assigned to the chambers 4, 5 and attached to the inner wall of the housing 2.
- a strain gauge 24 is mounted on the inner sleeve 3 as a further sensor.
- Strain gauge 24 detects the expansion of the inner sleeve 3. From the expansion, the forces acting from or to the outside can be determined. Such a sensor is particularly advantageous if the forces acting on the bearing are to be actively influenced.
- FIG. 4 shows the hydraulic bushing arrangement 1 according to FIG. 1 with a second concrete embodiment of a device 7.
- the device 7 comprises two lines, one of which opens into the first chamber 4 and the other into the second chamber 5. Both lines and thus both chambers 4, 5 are connected via a valve assembly 10 flow-conducting together.
- the valve assembly 10 comprises a second directional control valve 15, which is designed as a 3/3-way valve and a third directional control valve 15, which is also designed as a 3/3-way valve.
- the 3/3-way valves 15 are each assigned to a chamber 4, 5.
- a fourth directional control valve 1 6 is provided, which is designed as a 4/2-way valve.
- the fourth directional valve 1 6 is arranged on the suction side of the pumping device 1 1.
- the fourth directional valve 1 6 is associated with a container. The fourth directional valve 1 6 can thus be switched such that hydraulic fluid is either passed into the container or pumped out of this or that the hydraulic fluid circulates in a circuit.
- the interaction of the two 3/3-way valves 15 together with the 4/4-way valve 1 6 results in a variety of switching positions.
- the directional control valves 15, 16 can be interconnected such that the chambers 4, 5 can be filled or emptied as desired and / or that the
- Hydraulic fluid between the chambers 4, 5 flows around or circulated.
- Inner sleeve 3 relative to the housing 2. This allows adjustment of the axis - in which the hydraulic bush is mounted - in terms of the
- the valve assembly 10 allows the adjustment of the form of the
- Hydraulic fluid with respect to the desired pressure in the chambers 4, 5, with an adjustment during operation by readjustment of the valves is possible at any time.
- the spring characteristic of the hydraulic bush can be continuously adjusted from soft to hard at any time.
- a throttle or a damper can be realized.
- the hydraulic bushing arrangement 1 according to the invention enables a multiplicity of operating states.
- the connecting channel of the chambers 4, 5 is outside the camp and can be opened, closed and varied by means of the valve arrangement 10.
- This operating state can also be used as an emergency operating state (fail-safe).
- the external device 7 by means of the valve assembly 10 is easy in length and
- Damping behavior for example, by connecting reactors - be varied. This changes the frequency at which the stiffness change takes place. It is conceivable to increase the rigidity in operation up to two times. This is done by increasing the pressure in both chambers 4, 5. It is also possible to adjust the stiffness to near the static value for an adjustable amplitude. This is done by simultaneously lowering the pressure in both chambers 4, 5. Thus, for example, the decoupling of acoustic, high-frequency interference by the hydraulic jack can be substantially improved. By maintaining a targeted pressure difference, the hydraulic jack can also act as an actuator. The actuator can in turn have different stiffnesses, which depends on which medium pressure the
- the axis can be set to a specific arc and the dynamic stiffness can still be adapted to the operational conditions at the same time.
- a higher dynamic stiffness and at slow speed through a narrower arc lower dynamic stiffness can be set.
- the low dynamic stiffness is chosen so that a good driving stability is present, the lower dynamic stiffness but provides for a better acoustic behavior of the bearing and lowers in poor track conditions, the wheel rail forces.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Body Suspensions (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014003506.9A DE102014003506A1 (de) | 2014-03-14 | 2014-03-14 | Hydrobuchsenanordnung |
| PCT/EP2015/051711 WO2015135684A1 (de) | 2014-03-14 | 2015-01-28 | Hydrobuchsenanordnung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3117120A1 true EP3117120A1 (de) | 2017-01-18 |
| EP3117120B1 EP3117120B1 (de) | 2020-05-27 |
Family
ID=52434800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15701774.0A Active EP3117120B1 (de) | 2014-03-14 | 2015-01-28 | Hydrobuchsenanordnung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3117120B1 (de) |
| DE (1) | DE102014003506A1 (de) |
| WO (1) | WO2015135684A1 (de) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015202994A1 (de) * | 2015-02-19 | 2016-08-25 | Ford Global Technologies, Llc | Steuerung eines Hinterachsrahmens |
| AT519394B1 (de) * | 2016-11-24 | 2023-01-15 | Siemens Mobility Austria Gmbh | Radsteuerungsanordnung für ein Fahrwerk |
| CN111232007B (zh) * | 2020-01-08 | 2021-05-11 | 同济大学 | 一种内置于轴箱的弹性囊主动作用纵向定位及驱动装置 |
| CN112364572B (zh) * | 2020-10-20 | 2023-10-03 | 株洲时代瑞唯减振装备有限公司 | 一种用于液体橡胶复合节点的可快速更换的流道设计方法 |
| DE102020216069A1 (de) | 2020-12-16 | 2022-06-23 | Siemens Mobility GmbH | Anordnung zur Übertragung von Längskräften bei einem Schienenfahrzeug |
| US11485187B1 (en) * | 2021-05-28 | 2022-11-01 | Zoox, Inc. | Configurable bushing |
| US11807065B1 (en) | 2021-05-28 | 2023-11-07 | Zoox, Inc. | Pivot offset elasto-hydraulic bushing |
| DE102021114551B4 (de) | 2021-06-07 | 2023-08-17 | Trelleborg Antivibration Solutions Germany Gmbh | Hydrobuchse |
| DE102022105369B4 (de) | 2022-03-08 | 2024-07-18 | Trelleborg Antivibration Solutions Germany Gmbh | Hydrobuchse |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4440254A (en) * | 1980-12-10 | 1984-04-03 | Nissan Motor Co., Ltd. | Compliance steer control system |
| US4687223A (en) * | 1984-04-11 | 1987-08-18 | Mazda Motor Corporation | Suspension system for vehicle |
| JPS60240509A (ja) * | 1984-05-14 | 1985-11-29 | Nissan Motor Co Ltd | サスペンシヨン装置 |
| US4858899A (en) * | 1985-10-28 | 1989-08-22 | Nissan Motor Co., Ltd. | Bushing type vibration insulator |
| JPS63231032A (ja) * | 1987-03-16 | 1988-09-27 | Toyota Motor Corp | 流体入りブツシユ |
| DE4301149A1 (de) | 1993-01-18 | 1994-07-21 | Metzeler Gimetall Ag | Hydraulisch dämpfendes, aktives Motorlager |
| KR19980031242A (ko) * | 1996-10-31 | 1998-07-25 | 오상수 | 자동차의 서스펜션용 유압부시 제어시스템 |
| PT1228937E (pt) * | 1999-08-31 | 2005-02-28 | Construccio Y Aux De Ferrocarr | Dispositivo de guiamento dos eixos de um veiculo ferroviario |
| DE10310634A1 (de) * | 2003-03-10 | 2004-09-30 | Carl Freudenberg Kg | Achslenkerlager |
| FR2858673B1 (fr) * | 2003-08-07 | 2007-04-27 | Soc Technologie Michelin Stm | Articulation elastique d'assemblage et son utilisation pour mesurer un deplacement ou un effort |
| DE102005003052A1 (de) | 2005-01-22 | 2006-08-03 | Carl Freudenberg Kg | Hydrobuchse |
| FR2887001B1 (fr) * | 2005-06-14 | 2007-08-17 | Michelin Soc Tech | Articulation hydroelastique comportant un circuit de liaison pour le liquide |
| FR2906856A1 (fr) * | 2006-10-05 | 2008-04-11 | Michelin Soc Tech | Articulation hydro elastique a cisaillement radial |
| DE102010033811B4 (de) * | 2010-08-09 | 2020-03-05 | Gmt Gummi-Metall-Technik Gmbh | Hydraulisch dämpfende Hydro-Lager für Achslenkerlager |
| DE102013103827A1 (de) * | 2013-04-16 | 2014-10-16 | Bombardier Transportation Gmbh | Fahrwerk mit quergekoppelten Radeinheiten |
-
2014
- 2014-03-14 DE DE102014003506.9A patent/DE102014003506A1/de not_active Withdrawn
-
2015
- 2015-01-28 WO PCT/EP2015/051711 patent/WO2015135684A1/de not_active Ceased
- 2015-01-28 EP EP15701774.0A patent/EP3117120B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015135684A1 (de) | 2015-09-17 |
| EP3117120B1 (de) | 2020-05-27 |
| DE102014003506A1 (de) | 2015-09-17 |
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